Citazione Stile APA (7a Edizione)

Holland, J., & Leslie, D. (2018). Tour operators and operations: Development, management and responsibility. CABI.

Citazione stile Chigago Style (17a edizione)

Holland, Jakki, e David Leslie. Tour Operators and Operations: Development, Management and Responsibility. Wallingford, Oxfordshire: CABI, 2018.

Citatione MLA (9a ed.)

Holland, Jakki, e David Leslie. Tour Operators and Operations: Development, Management and Responsibility. CABI, 2018.